SIGA Ownership | Who Owns SIGA?

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SIGA Ownership Summary

SIGA is owned by 46.93% institutional investors, 42.66% insiders, and 10.40% retail investors. Blackrock is the largest institutional shareholder, holding 5.50% of SIGA shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 1.73% of its assets in SIGA shares.

SIGA Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	SIGA	46.93%	42.66%	10.40%
Sector	Healthcare Stocks	35.58%	11.87%	52.55%
Industry	Specialty & Generic Drug Manufacturers Stocks	20.67%	13.90%	65.43%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	3.91M	5.50%	$29.71M
Blackrock funding, inc. /de	3.49M	4.88%	$18.69M
Vanguard group	2.72M	3.80%	$16.64M
Dimensional fund advisors lp	2.70M	3.77%	$14.46M
Altravue capital	2.43M	3.40%	$13.01M
Arrowstreet capital, limited partnership	1.53M	2.13%	$8.16M
American century companies	1.32M	1.84%	$7.05M
Geode capital management	1.32M	1.84%	$7.04M
Aqr capital management	1.22M	1.70%	$6.53M
State street	1.01M	1.41%	$5.41M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Altravue capital	2.43M	1.12%	$13.01M
First wilshire securities management	890.50K	1.07%	$4.76M
Corton capital	19.82K	0.45%	$181.38K
Summerhaven investment management	101.03K	0.33%	$540.48K
Denali advisors	436.89K	0.26%	$2.34M
Legato capital management	512.04K	0.25%	$2.74M
Cormorant asset management, lp	500.00K	0.22%	$3.79M
Uniplan investment counsel	371.41K	0.20%	$1.99M
Significant wealth partners	23.13K	0.15%	$123.75K
Foundry partners	441.73K	0.13%	$2.65M

Top Buyers

Holder	Shares	% Assets	Change
Arrowstreet capital, limited partnership	1.53M	0.00%	500.88K
Cormorant asset management, lp	500.00K	0.22%	500.00K
Blackrock	3.91M	0.00%	458.39K
Two sigma investments, lp	433.66K	0.00%	423.26K
Hrt financial lp	360.07K	0.00%	360.07K

Top Sellers

Holder	Shares	% Assets	Change
Jupiter asset management	-	-	-990.65K
Van lanschot kempen investment management	-	-	-924.81K
Csm advisors	-	-	-627.87K
General american investors	-	-	-539.74K
Price jennifer c.	-	-	-360.00K

New Positions

Holder	Shares	% Assets	Change	Value
Cormorant asset management, lp	500.00K	0.22%	500.00K	$3.79M
Hrt financial lp	360.07K	0.00%	360.07K	$1.93M
Vanguard fiduciary trust	275.18K	0.00%	275.18K	$1.47M
Cubist systematic strategies	126.92K	0.01%	126.92K	$1.16M
Vanguard global advisers	90.78K	0.00%	90.78K	$485.66K

Sold Out

Holder	Change
Parkside financial bank & trust	-1.00
Caitong asset management	-8.00
Nelson, van denburg & campbell wealth management group	-10.00
Financial gravity asset management	-18.00
Jones financial companies lllp	-39.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	176	-12.44%	33,605,915	-6.20%	46	1.87%	93	-8.82%	63	3.28%
Dec 31, 2025	55	-72.64%	7,327,030	-78.44%	10	0.45%	27	-74.29%	17	-69.64%
Sep 30, 2025	72	-59.55%	7,324,679	-78.73%	10	0.44%	30	-68.75%	21	-59.62%
Jun 30, 2025	175	6.71%	34,353,986	-2.06%	48	1.99%	94	27.03%	51	-12.07%
Mar 31, 2025	162	-9.50%	35,019,103	1.38%	49	2.09%	75	-15.73%	55	3.77%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	1.24M	1.73%	-
Vanguard Total Stock Mkt Idx Inv	1.21M	1.68%	-
Avantis US Small Cap Value ETF	1.18M	1.65%	-
iShares Russell 2000 ETF	963.45K	1.34%	8.13K
First Wilshire US SCV Equities SMA	890.50K	1.24%	302.70K
General American Investors	539.74K	0.75%	539.74K
DFA US Targeted Value I	520.40K	0.73%	44.80K
Macquarie Wealth Builder Institutional	510.39K	0.71%	-
Kempen (Lux) Global Small-Cap I	474.24K	0.66%	-250.99K
Vanguard Institutional Extnd Mkt Idx Tr	465.98K	0.65%	-

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	-	-
2025 Q3	-	-
2025 Q2	-	-
2025 Q1	-	-
2024 Q4	-	-

SIGA Ownership FAQ

Who Owns SIGA?

SIGA shareholders are primarily institutional investors at 46.93%, followed by 42.66% insiders and 10.41% retail investors. The average institutional ownership in SIGA's industry, Specialty & Generic Drug Manufacturers Stocks, is 20.67%, which SIGA exceeds.

Who owns the most shares of SIGA?

SIGA’s largest shareholders are Blackrock (3.91M shares, 5.50%), Blackrock funding, inc. /de (3.49M shares, 4.88%), and Vanguard group (2.72M shares, 3.80%). Together, they hold 14.19% of SIGA’s total shares outstanding.

Does Blackrock own SIGA?

Yes, BlackRock owns 5.50% of SIGA, totaling 3.91M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 29.71M$. In the last quarter, BlackRock increased its holdings by 458.39K shares, a 13.27% change.

Who is SIGA’s biggest shareholder by percentage of total assets invested?

Altravue capital is SIGA’s biggest shareholder by percentage of total assets invested, with 1.12% of its assets in 2.43M SIGA shares, valued at 13.01M$.

Who is the top mutual fund holder of SIGA shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of SIGA shares, with 1.73% of its total shares outstanding invested in 1.24M SIGA shares.

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